WEG CFW300 V1.3X, Руководство по программированию

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Digital and Analog Inputs and Outputs
12-4 | CFW300
12
Description:
Each analog input of the inverter is defined by the steps of calculation of Signal, Offset, Gain, Filter, Function
and Value AIx, as shown in
Figure 12.2 on page 12-4 .
Function
AI1 - P231
AI2 - P236
Gain
AI1 - P232
AI2 - P237
Filter
AI1 - P235
AI2 - P240
AI1 - P018
AI2 - P019
+
+
Offset
AI1 - P234
AI2 - P239
Value AIx
(interno)
Signal
AI1 - P233
AI2 - P238
Input
AI1
AI2
(*)
(*) Control terminal available on the IO’s expansion accessory.
Figure 12.2: Block diagram of the analog inputs - (AIx)
P233 - AI1 Input Signal
P238 - AI2 Input Signal
Adjustable
Range:
0 = 0 to 10 V / 20 mA
1 = 4 to 20 mA
2 = 10 V / 20 mA to 0
3 = 20 to 4 mA
Factory
Setting:
0
Properties:
Description:
These parameters configure the signal type (if current or voltage) that will be read in each analog input, as well
as its variation range. In options 2 and 3 of the parameters, the reference is inverse, that is, the maximum
frequency is obtained with the minimum reference.
In order to use the analog input AI1 with voltage signal, terminal 8 of the control board of the frequency inverter
must be used. For current signal, terminal 6 of the inverter must be used. In the other cases, (AI2, for instance),
refer to the installation, configuration and operation guide of the IO's expansion accessory used.
Table 12.2: Alx configuration and equation
Signal P233 or P238 DIP Switch Equation AIx (%)
0 to 10 V 0 8
AIx = x (100 %) + offset x gain
AIx(V)
10 V
( (
0 to 20 mA 0 6
AIx = x (100 %) + offset x gain
AIx(mA)
20 mA
( (
4 to 20 mA 1 6
AIx = x (100 %) + offset x gain
(AIx(mA) - 4 mA)
16 mA
(
(
(
(
10 to 0 V 2 8
AIx = 100 % - x (100 %) + offset x gain
AIx(V)
10 V
( (
20 to 0 mA 2 6
AIx = 100 % - x (100 %) + offset x gain
AIx(mA)
20 mA
( (
20 to 4 mA 3 6
AIx = 100 % - x (100 %) + offset x gain
(AIx(mA) - 4 mA)
16 mA
(
(
(
(